According to the Irish Muslim Peace and Integration Council (IMPIC), there is clear proof that there is extremism in Ireland.

Dr al-Qadri says he first sounded the warning about Islamic extremists in Ireland two years ago, but “nobody listened”.

He says now his theory “has been proven”, after it emerged that one of the three London attackers – Rachid Redouane – had lived and married in Dublin.

He said: “Not being aware of it or being ignorant of it is not enough.

“I want Muslim leaders in Ireland to take the lead in speaking out against extremism, of providing a counter-narrative to the messages of hate and of telling people you can be a good Muslim and a good Irish citizen.”